The thought really, really turns me on. I would have to be 100% positive that it was a woman on the other side, though. I like the anonymity of it, and the unknown.
I am an attractive guy, so it's not got anything to do with not being able to get anything better, it's just a fantasy. I can see how butt-ugly people would profit from this though
I would never do it though, unless I knew the other person, and that kinda defeats the whole idea